24 Hours Only! The 2026 '4-koma Day' Features a Massive Special on 'Bono Bono' for Its 40th Anniversary! A Full Lineup of Popular Titles, Old and New
Takeshobo will hold its annual '4-koma Day' e-book campaign for 24 hours on April 4, 2026. Over 1,300 4-panel manga titles, including the 40th-anniversary 'Bono Bono', will be available for 44 yen or at half price across major e-book stores.
📋 Article Processing Timeline
- 📰 Published: April 4, 2026 at 02:00
- 🔍 Collected: April 3, 2026 at 17:30
- 🤖 AI Analyzed: April 21, 2026 at 04:28 (418h 58m after Collected)
Takeshobo Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo, President: Sumitaka Miyata) will hold a large-scale e-book campaign where over 1,300 4-panel manga volumes distributed as e-books can be purchased for 44 yen (tax included) or at half price for 24 hours only on Saturday, April 4, 2026, at major e-book stores.
(*Excludes new releases and some comic volumes/books. Eligible titles may also vary by store. Please check each store for details.)
'Takeshobo 4-koma Day', where you can read masterpieces and popular works from Takeshobo at a great price, is here again this year!
The 2026 '4-koma Day' will be delivered as a special version featuring 'Bono Bono', which celebrates its 40th anniversary of serialization this year!
The 49 published comic volumes depicting the daily life of Bono Bono, a boy sea otter, with Chipmunk and Raccoon are truly a satisfying read. It is full of highlights, such as the long episode 'About Ori-chan', which became a hot topic when broadcast sequentially as a TV anime in 2025, and the appearance of the popular character 'Shimatchau Ojisan'. With the memorable 50th volume scheduled to be released this July, please take this opportunity to enjoy the series all at once.
In addition, many past 4-panel masterpieces have been picked up, such as 'Obatarian', which vividly portrays powerful women and even became a buzzword, and 'Furiten-kun', which Masashi Ueda has been drawing since 1979. Furthermore, we have prepared a wide variety of popular titles, including 'Morita-san wa Mukuchi', 'Yurumeitsu', and 'Sensei no Ojikan' which were adapted into anime, 'Makuhari Cactus Campus' which comically depicts fictional university life in Chiba Prefecture, and 'Hime no Tame nara Shineru' where passionate adoration for Sei Shonagon's Empress Teishi explodes.
Reunions with nostalgic masterpieces and encounters with new favorite works await you. Please be sure to purchase them during this special opportunity.
■ 4-koma Day Campaign Overview
Campaign Period: 24 hours only on Saturday, April 4, 2026
Campaign Details: 44 yen (tax included) or half price, etc.
*Please check individual stores and services for eligible titles.
[Participating Bookstores (In no particular order, titles omitted)]
Galaxy Comic
Kindle (wholesale)
Manga BANG!
Wick
Comic Cmoa
d-book
Piccoma
DMM.com
Kinokuniya kinoppy
Google Play Books
honto
Manga Zenkan Dot Com
d-anime store
BOOK☆WALKER
Bookomi
BookLive
au Book Pass
Reader Store
Mecha Comic
Manga Saison
U-NEXT
LINE Manga (ebj)
Rakuten Kobo
DLsite/comipo
(*Excludes new releases and some comic volumes/books. Eligible titles may also vary by store. Please check each store for details.)
'Takeshobo 4-koma Day', where you can read masterpieces and popular works from Takeshobo at a great price, is here again this year!
The 2026 '4-koma Day' will be delivered as a special version featuring 'Bono Bono', which celebrates its 40th anniversary of serialization this year!
The 49 published comic volumes depicting the daily life of Bono Bono, a boy sea otter, with Chipmunk and Raccoon are truly a satisfying read. It is full of highlights, such as the long episode 'About Ori-chan', which became a hot topic when broadcast sequentially as a TV anime in 2025, and the appearance of the popular character 'Shimatchau Ojisan'. With the memorable 50th volume scheduled to be released this July, please take this opportunity to enjoy the series all at once.
In addition, many past 4-panel masterpieces have been picked up, such as 'Obatarian', which vividly portrays powerful women and even became a buzzword, and 'Furiten-kun', which Masashi Ueda has been drawing since 1979. Furthermore, we have prepared a wide variety of popular titles, including 'Morita-san wa Mukuchi', 'Yurumeitsu', and 'Sensei no Ojikan' which were adapted into anime, 'Makuhari Cactus Campus' which comically depicts fictional university life in Chiba Prefecture, and 'Hime no Tame nara Shineru' where passionate adoration for Sei Shonagon's Empress Teishi explodes.
Reunions with nostalgic masterpieces and encounters with new favorite works await you. Please be sure to purchase them during this special opportunity.
■ 4-koma Day Campaign Overview
Campaign Period: 24 hours only on Saturday, April 4, 2026
Campaign Details: 44 yen (tax included) or half price, etc.
*Please check individual stores and services for eligible titles.
[Participating Bookstores (In no particular order, titles omitted)]
Galaxy Comic
Kindle (wholesale)
Manga BANG!
Wick
Comic Cmoa
d-book
Piccoma
DMM.com
Kinokuniya kinoppy
Google Play Books
honto
Manga Zenkan Dot Com
d-anime store
BOOK☆WALKER
Bookomi
BookLive
au Book Pass
Reader Store
Mecha Comic
Manga Saison
U-NEXT
LINE Manga (ebj)
Rakuten Kobo
DLsite/comipo